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ICS9EX21801A Datasheet(PDF) 1 Page - Integrated Device Technology |
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ICS9EX21801A Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 14 page ICS9EX21801A IDTTM 18 Output PCIe G2/QPI Differential Buffer with 2:1 input mux 1463B — 01/20/10 18 Output PCIe G2/QPI Differential Buffer with 2:1 input mux DATASHEET 1 Description The ICS9EX21801 provides 18 output clocks for PCIe Gen2 (100MHz) or QPI (133MHz) applications. The 9EX21801 has 4 selectable SMBus addresses, and dedicated CKPWRGD/PD# and VDDA pins for easy board design. A differential CPU clock from a CK410B+ main clock generator, such as the ICS932S421, drives the ICS9EX21801. In fanout mode, the 9EX21801 provides outputs up to 400MHz. Key Specifications • DIF output cycle-to-cycle jitter < 50ps • DIF output-to-output skew < 150 ps • PCIe Gen2 compliant phase noise • QPI 133MHz compliant phase noise Features/Benefits • Supports output clock frequencies up to 400 MHz • 4 Selectable SMBus addresses • SMBus address is independent of PLL operating mode • Dedicated CKPWRGD/PD# and VDDA pins ease board design Funtional Block Diagram CLKA_IN CLKA_IN# DIF(17:0) HIBW_BYPM_LOBW# SEL_A_B# SMBDAT SMBCLK CKPWRGD/PD# 18 IREF OE(17:15)# OE(14:5)#, OE_01234# 12 SMB_A0 SMB_A1 100M_133M# CLKB_IN CLKB_IN# PLL (SS Compatible) Logic |
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